Hach Free Ammonia & Monochloramine Chemkey® Reagents, Box of 25 each, 9429600By Hach $164.00 | EA Quantity discounts available QuantityPrice Product #: 700111Mfr. Part #: 9429600 This item is in stock Quantity -+ Add to Cart Free Ground Shipping On All Orders Over $1500!*Conditions Apply* Details Description Free Ammonia, 0.05 - 0.5 mg/L, and Monochloramine, 0.04 - 4.00 mg/L, Chemkeys. For SL1000 Portable Parallel Analyzer (PPA). Box of 25 e... DetailsBackDescription Free Ammonia, 0.05 - 0.5 mg/L, and Monochloramine, 0.04 - 4.00 mg/L, Chemkeys. For SL1000 Portable Parallel Analyzer (PPA). Box of 25 each. Includes 50 Chemkeys (25 for Free Ammonia and 25 for Monochloramine) California residents see Prop 65 WARNINGS